2021 Sec 4 Phy Prelim Paper 2 Section A

1 Class/ Index Number / Centre Number/ ‘O’ Level Index Number / Name MARIS STELLA HIGH SCHOOL PRELIMINARY EXAMINATION SECONDARY FOUR PHYSICS 6091/02 Paper 2 25 August 2021 1 hour 45 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your class, index number, Centre number, O level index number and name in the spaces at the top of this page. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. This is Section A of the paper. Answer all questions. Write your answers in the spaces provided on the question paper. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all t heir working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper (sections A and B) is 80. At the end of the examination, hand in the following separately: (1) Section A
 (2) Section B For Examiner’s Use Section A Section B Total This document consists of 12 printed pages. 50 30 80

2 Section A Answer all the questions in this section. 1 A golf ball is hit from point A on the ground and moves through the air to point B. The path of the ball is illustrated in Fig.1.1. Ignore the effects of air resistance. Fig. 1.1 The ground slopes downhill with constant gradient. The ball has an initial velocity of 63 m s-1 at an angle to the horizontal. The ball hits the ground at B after 4.9 s. (a) State the Principle of Conservation of Energy. …………..……………………………………………………………………………………….. …………..……………………………………………………………………………………….. …………..…………………………………………………………………………………… [2] (b) Calculate the speed of the ball just before it lands on the ground at B. speed = ………….………………. [3] 50 m

3 (c) Describe the energy changes of the ball from the instant it is hit at point A to the instant just before it lands on the ground at B. …………..……………………………………………………………………………………….. …………..……………………………………………………………………………………….. …………..……………………………………………………………………………………….. …………..…………………………………………………………………………………… [2] 2 (a) State what is meant by a field line in (i) a gravitational field …………..……………………………………………………………………………………….. …………..…………………………………………………………………………………… [1] (ii) an electric field …………..……………………………………………………………………………………….. …………..…………………………………………………………………………………… [1] (b) In an experiment conducted in the International Space Station (ISS), a charged metal sphere is isolated and placed in a Faraday’s cage. Th